Updated the link to acl-policies

https://www.consul.io/docs/security/acl was pointing to https://www.consul.io/docs/security/acl/policies (broken) and is now pointing to https://www.consul.io/docs/security/acl/acl-policies (working)

website/content/docs/security/acl/index.mdx

@@ -54,7 +54,7 @@ In addition to the rules that authenticate access to services, several attribute
 
 Refer to the following topics for details about policies:
 
-- [Policies](/docs/security/acl/policies)
+- [Policies](/docs/security/acl/acl-policies)
 - [ACL policy command line](/commands/acl/policy)
 - [ACL policy API](/api-docs/acl/policies)